Has anyone booked tickets via http://www.travellink.dk and if so, do you have any feedback, good or bad?

I'm getting some quite good prices for SK trans-atlantic flights in comparison to the SK website and am tempted. But I'm not happy that they don't accept American Express which I prefer to use when booking travel for the insurance coverage.

They are showing better fares even than Wideroe and with some preferable connections for my route and dates.

Susan